691
FZUS63 KMKX 181358
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
858 AM CDT Fri Oct 18 2024

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.SYNOPSIS...

High pressure of 30.4 inches will linger over the Ohio River
Valley and Middle Appalachia through the weekend and into Monday.
Breezy south to southwest winds will continue through the weekend
as a weak cold front approaches the upper Great Lakes and weakens
on Sunday. The approach of the front will tighten the pressure
gradient, leading to the gusty conditions with the strongest gusts
over the northern half to northern one third of the lake. Very
slight chances for showers will occur over the northern end of
Lake Michigan as the front draws close Saturday night into Sunday.

LMZ261-362-364-366-563-565-567-868-182115-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
858 AM CDT Fri Oct 18 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southwest winds 15 to 25 kt becoming south to
30 kt. Waves 5 to 8 ft occasionally to 10 ft.
.TONIGHT...South winds to 30 kt becoming southwest 10 to 20 kt.
Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY NIGHT...Southwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.SUNDAY...Southwest winds 15 to 25 kt. Waves 3 to 5 ft.
.SUNDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming south. Waves 2 to
4 ft.
.TUESDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-182115-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
858 AM CDT Fri Oct 18 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southwest winds 10 to 20 kt becoming south 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.TONIGHT...South winds 15 to 25 kt becoming southwest 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south. Waves
3 to 5 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Waves 3 to 5 ft.
.SUNDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt. Waves 3 to 5 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming south. Waves 2 to
4 ft.
.TUESDAY...South winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-182115-
MAFOR 1816/
MICHIGAN NORTH 14440 11530 12520 11530. Waves 3 to 6 feet
building to 4 to 7 feet this afternoon. Waves 4 to 7 feet
subsiding to 3 to 6 feet tonight. Waves 3 to 5 feet subsiding to
2 to 4 feet Saturday morning.

MICHIGAN SOUTH 14430 11420 11520 11510 11520. Waves 3 to 5 feet
this afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet
tonight. Waves 1 to 3 feet Saturday morning.

$$


Sheppard

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes